Download - 18×11 DOTS MATRIX LED DRIVER WITH 12MHZ SPIams.issi.com/WW/pdf/IS31FL3743B_EB.pdf · 18×11 DOTS MATRIX LED DRIVER WITH 12MHZ SPI Integrated Silicon Solution, Inc. – 1 Rev. A,

18×11 DOTS MATRIX LED DRIVER WITH 12MHZ SPI

Integrated Silicon Solution, Inc. – www.issi.com 1 Rev. A, 08/14/2018

DESCRIPTION

The IS31FL3743B is a general purpose 18×n (n=1~11) LED Matrix programmed via 12MHz SPI interface. Each LED can be dimmed individually with 8-bit PWM data and 8-bit DC scaling data which allowing 256 steps of linear PWM dimming and 256 steps of DC current adjustable level.

Additionally each LED open state can be detected, IS31FL3743B store the open information in Open- Registers. The Open Registers allowing MCU to read out via SPI, inform MCU whether there are LEDs open or short LEDs.

FEATURES

Supply voltage range: 2.7V to 5.5V 18 current sinks (Maximum) Support 18×n (n=1~11) LED matrix configurations Individual 256 PWM control steps Individual 256 DC current steps Global 256 DC current steps SDB rising edge reset SPI module 24kHz PWM frequency 12MHz SPI interface State lookup registers Individual open and short error detect function 180 degree phase delay operation to reduce

power noise De-Ghost Cascade for synchronization of chips UQFN-40 (5mm×5mm) package

QUICK START

Figure 1: Photo of IS31FL3743B Evaluation Board

RECOMMENDED EQUIPMENT

5.0V, 2A power supply

ABSOLUTE MAXIMUM RATINGS

≤ 5.5V power supply

Caution: Do not exceed the conditions listed above, otherwise the board will be damaged.

PROCEDURE

The IS31FL3743B evaluation board is fully assembled and tested. Follow the steps listed below to verify board operation.

Caution: Do not turn on the power supply until all connections are completed.

1) Short JP1 to enable the control of board MCU (default status).

2) Connect the 5VDC power to VCC/GND of CON4, or plug in the USB power input to micro-USB.

3) Turn on the power supply, pay attention to the supply current. If the current exceeds 1A, please check for circuit fault.

EVALUATION BOARD OPERATION

The IS31FL3743B evaluation board has five display modes. Press K1 to switch configurations:

Note: See Appendix for each mode’s detail.

1) (Default mode) Rainbow #1. 2) Rainbow #2. 3) Purple breath. 4) Change colors. 5) White. Note: IS31FL3743B solely controls the FxLED function on the evaluation board.

ORDERING INFORMATION

Part No. Temperature Range Package

IS31FL3743B-QULS4-EB -40°C to +125°C, Industrial UQFN-40, Lead-free

Table 1: Ordering Information

For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at [email protected] or (408) 969-6600.



SOFTWARE SUPPORT

JP1 default setting is close circuit. If it is set to open, the on-board MCU will stop working. The SPI pins and SDB pin are set to High Impedance. External SPI and SDB signals can be connected to TP4 to control the IS31FL3743B LED driver.

Figure 2: Photo of Arduino UNO connected to Evaluation Board

The steps listed below are an example using the Arduino for external control.

The Arduino hardware consists of an Atmel microcontroller with a bootloader allowing quick firmware updates. First download the latest Arduino Integrated Development Environment IDE (1.6.12 or greater) from www.arduino.cc/en/Main/Software. Also download the Wire.h library from www.arduino.cc/en/reference/wire and verify that pgmspace.h is in the directory …program Files(x86)/Arduino/hardware/tools/avr/avr/include/avr/. Then download the latest IS31FL3743B test firmware (sketch) from the ISSI website http://ams.issi.com/US/product-analog-fxled-driver.shtml.

1) Check if the interface selection resistors are replaced to 4.7kΩ resistors on MISO/ CS/ SCK/ MOSI position. If these resistors is 0R, ext-control will fail due to Arudino is 5V power rail while IS31FL3743B is 3V power rail.

2) Open JP1. 3) Connect the 7 pins from Arduino board to

IS31FL3743B EVB: a) Arduino 5V pin to IS31FL3743B EVB VCC. b) Arduino GND to IS31FL3743B EVB GND. c) Arduino 3.3V pin to IS31FL3743B EVB

SDB. d) Arduino SCK (13) to IS31FL3743B EVB

SCK. e) Arduino MISO (12) to IS31FL3743B EVB

MISO. f) Arduino MOSI (11) to IS31FL3743B EVB

MOSI. g) Arduino SS (10) to IS31FL3743B EVB CS. h) If Arduino use 3.3V MCU VCC, connect

3.3V to IS31FL3743B EVB SDB, if Arduino use 5.0V MCU VCC, connect 5.0V to EVB SDB. (Arduino UNO is 5.0V, so SDB=5.0V)

4) Use the test code in appendix Ⅰ or download the test firmware (sketch) from the ISSI website, a .txt file and copy the code to Arduino IDE, compile and upload to Arduino.

5) Run the Arduino code and the initial mode will change the RGB LED colors.

Please refer to the datasheet to get more information about IS31FL3743B.

GND

SCK

MISOSDB

VCCMOSI

CS



GND

3V

SDASCL

INTB

USB_DM2USB_DP2DIOGND3V

GND

VIN1

GND2

EN3

BP4

VOUT5

U2

LDO

3V

CLK

3V

MCU

3V Power

K1

3V

SDB

Micro USB

VCC1

USB_DM2

USB_DP3

NC4

GND5

Con5

PVCC

USB_DM2USB_DP2

3V

USB_DMUSB_DP

D1

DFL240D2

DFL240

IO

PVCC

SDB

3V

AVCC

SW01SW02SW03SW04SW05SW06

CS01CS02CS03CS04CS05CS06CS07CS08CS09CS10CS11CS12CS13CS14CS15CS16CS17CS18

OSCIOSCO

PVCC

VBAT1

PC13-ANTI_TAMP2

PC14-OSC32_IN3

PC15-OSC32_OUT4

OSC_IN5

OSC_OUT6

NRST7

VSSA8

VDDA9

PA0-WKUP/ADC_IN0/TIM2_CH1_ETR10

PA1/ADC_IN1/TIM2_CH211

PA2/USART2_TX/ADC_IN2/TIM2_CH312

PA3/USART2_RX/ADC_IN3/TIM2_CH413

PA4/SPI1_NSS/ADC_IN414

PA5/SPI1_SCK/ADC_IN515

PA6/SPI1_MISO/ADC_IN6/TIM3_CH116

PA7/SPI1_MOSI/ADC_IN7/TIM3_CH217

PB0/ADC_IN8/TIM3_CH318

PB1/ADC_IN9/TIM3_CH419

PB2/BOOT120

PB10/I2C2_SCL/USART3_TX21

PB11/I2C2_SDA/USART3_RX22

VSS_123

VDD_124

PB12/SPI2_NSS/TIM1_BKIN25

PB13/SPI2_SCK/TIM1_CH1N26

PB14/SPI2_MISO/TIM1_CH2N 27PB15/SPI2_MOSI/TIM1_CH3N

28PA8/TIM1_CH1/MCO

29PA9/USART1_TX/TIM1_CH230

PA10/USART1_RX/TIM1_CH331

PA11/CANRX/USBDM/TIM1_CH4 32PA12/CANTX/USBDP/TIM1_ETR

33PA13/JTMS/SWDIO

34VSS_235

VDD_236

PA14/JTCK/SWCLK37PA15/JTDI38

PB3/JTDO39

PB4/JNTRST 40PB5

41PB6/I2C1_SCL/TIM4_CH1

42PB7/I2C1_SDA/TIM4_CH243

BOOT044

PB8/TIM4_CH3 45PB9/TIM4_CH4

46VSS_3

47VDD_348

U3

STM32F103C8T6

SINK01SINK02SINK03SINK04SINK05SINK06SINK07SINK08SINK09SINK10SINK11SINK12SINK13SINK14SINK15SINK16SINK17SINK18

RSET

3V

SW01

SW02

SW03

SW04

SW05

SW06SINK09

SINK10SINK11SINK12SINK13SINK14SINK15SINK16SINK17SINK18

SW07SW08SW09

SW07

SW08

SW09

PA0SW10SW11

MOSIMISOSCKCS

OSCO

OSCIOSCO

2

OSCI4

GND1

GND3

Y1 8M

GNDSDASCL

SDBMISO

1SDB

2

MOSI3

5V4

SCK5

SCL6

CS7

SDA8

PA09 GND 10

TP4

PVCC

MISOMOSISCKCSPA0

SW10

SW11

SINK01SINK02SINK03SINK04SINK05SINK06SINK07SINK08

1 23 45 67 89 1011 1213 1415 16

CON1

C1

0.1uF

C2

0.1uF

C333P

C433P

C51u

C61u

C7

10nF

C81u

C910u

R1 4.7KR2 4.7K

R4 100K

R510K

CS01 20RCS02 20R

SDA NC

SCL NC

SDA

SCL

SCK 0R

MOSI 0R

SCK

MOSI

AD1 NC

AD2 NC

AD1

AD2

MISO 0R

CS 0R

MISO

CS

12

JP1

GNDPA0

R9 1K

R8 100K3V

R1010K

R11 22RR12 22R

R13 1.5K

1 23 45 67 89 1011 1213 1415 16

CON2

1 23 45 67 89 1011 1213 1415 16

CON3

CS03 20RCS04 20RCS05 20RCS06 20RCS07 20RCS08 20RCS09 20RCS10 20RCS11 20RCS12 20RCS13 20RCS14 20RCS15 20RCS16 20RCS17 20RCS18 20R

SW81

SW6 2

SW43

SW24

PVCC5

SW1 6

SW37

SW58

SW79

SW910

SW11 11

CS18 12CS17

13CS16

14CS1515

PGND16

CS1417

CS13 18CS12

19CS11

20CS1021

VCC22

GND23

MISO24

CS25

SDB26

SCK27MOSI

28

RSET29 SYNC30

CS931

CS8 32CS7

33CS6

34CS535

CS436

CS3 37CS2

38CS1

39

SW1040

GND41

U1

IS31FL3743B

SCK1MOSI1

CS_1MISO1

5V 0R

3V NC

AVCCPVCC

3V

GNDGND

CLK

DIO

3V

AD1

AD2

PVCC

GND

PVCCPVCCPVCC

GND

SDB

PVCC

GNDGND

123456789101112131415161718

CON4

SYNC

SYNC

SCK1

MOSI1

MISO1

CS_1

SCK1

MOSI1

MISO1

CS_1

R6

NC

R3

NC

*Note 1

Figure 3: IS31FL3743B Application Schematic

Note 1: IS31FL3743B use SPI interface and MISO, CS, SCK, MOSI position need to short by 0R resistors. In order to use the Arduino for external control, MISO, CS, SCK, MOSI positions are changed by 4.7kΩ resistors.

D37RGB4P

D43RGB4P

D49RGB4P

D55RGB4P

D61RGB4P

D38RGB4P

D44RGB4P

D50RGB4P

SW1 SW2 SW3 SW4 SW5 SW6

CS1CS2CS3

CS4CS5CS6

CS7CS8CS9

CS10CS11CS12

CS13CS14CS15

CS16CS17CS18

D56RGB4P

D62RGB4P

D39RGB4P

D45RGB4P

D51RGB4P

D57RGB4P

D63RGB4P

D40RGB4P

D46RGB4P

D52RGB4P

D58RGB4P

D64RGB4P

D41RGB4P

D47RGB4P

D53RGB4P

D59RGB4P

D6RGB4P

D12RGB4P

D18RGB4P

D24RGB4P

D30RGB4P

D36RGB4P

D5RGB4P

D11RGB4P

D17RGB4P

D23RGB4P

D29RGB4P

D35RGB4P

D4RGB4P

D10RGB4P

D16RGB4P

D22RGB4P

D28RGB4P

D34RGB4P

D3RGB4P

D9RGB4P

D15RGB4P

D21RGB4P

D27RGB4P

D33RGB4P

D2RGB4P

D8RGB4P

D14RGB4P

D20RGB4P

D26RGB4P

D32RGB4P

D1RGB4P

D7RGB4P

D13RGB4P

D19RGB4P

D25RGB4P

D31RGB4P

SW1

SW2

SW3

SW4

SW5

SW6

CS1CS2 CS3CS4 CS5CS6 CS7CS8 CS9

CS10 CS11CS12 CS13CS14 CS15CS16 CS17CS18

1 23 45 67 89 1011 1213 1415 16

P1

Header 8X2

1 23 45 67 89 1011 1213 1415 16

P2

Header 8X2

1 23 45 67 89 1011 1213 1415 16

P3

Header 8X2

SW7

SW8

SW9

SW10

SW11

D65RGB4P

D42RGB4P

D48RGB4P

D54RGB4P

D60RGB4P

D66RGB4P

SW7 SW8 SW9 SW10 SW11

Figure 4: FxLED 6x11 ARRAY Application Schematic



BILL OF MATERIALS

IS31FL3743B

Name Symbol Description Qty Supplier Part No.

LED Driver U1 Matrix LED Driver 1 ISSI IS31FL3743B

LDO U2 Reduced voltage 1 SGMICRO SGM2019-3.3V

MCU U3 Microcontroller 1 STM STM32F103C8T6

Diode D1,D2 Diode, SMD 2 DIODES DFLS240

Crystal Y1 Crystal, 8MHz 1 JB HC-49S

Resistor R1,R2 RES,4.7k,1/10W,±5%,SMD 2 Yageo RC0603JR-074K7L

Resistor R4,R8 RES,100k,1/10W,±5%,SMD 2 Yageo RC0603JR-07100KL

Resistor R5,R10 RES,10k,1/10W,±5%,SMD 2 Yageo RC0603JR-0710KL

Resistor R9 RES,1k,1/10W,±5%,SMD 1 Yageo RC0603JR-071KL

Resistor R11,R12 RES,22R,1/10W,±5%,SMD 2 Yageo RC0603JR-0722RL

Resistor R13 RES,1.5k,1/10W,±5%,SMD 1 Yageo RC0603JR-071K5L

Resistor MISO,CS,SCK,

MOSI,3V RES,4.7k,1/10W,±5%,SMD (Note 2)

2 Yageo RC0603JR-074K7L

Resistor

CS01,CS02,CS04,CS05,CS07,CS08,CS10,CS11,CS13,CS14,CS16,CS17

RES,20R,1/10W,±5%,SMD 12 Yageo RC0603JR-0720RL

Resistor CS03,CS06,CS09,CS12,CS1

5,CS18

RES,20R,1/10W,±5%,SMD (Note 3)

6 Yageo RC0603JR-0720RL

Capacitor C1,C2 CAP,100nF,16V,±20%,SMD 2 Yageo CC0603MRX7R7BB104

Capacitor C3,C4 CAP,33pF,50V,±5%,SMD 2 Yageo CQ0603JRNPO9BN330

Capacitor C5,C6,C8 CAP, 1µF,16V,±10%,SMD 3 Yageo CC0603KRX7R7BB105

Capacitor C7 CAP,10nF,16V,±10%,SMD 1 Yageo CC0603KRX7R7BB103

Capacitor C9 CAP,10µF,16V,±20%,SMD 1 Yageo CC0603MRX5R7BB106

Button K1 Button SMD 1

Bill of Materials, refer to Figure 3 above.

FxLED 6x11 ARRAY

Name Symbol Description Qty Supplier Part No.

Diode D1~D66 RGB LED, SMD 66 Everlight 9-237/R6GHBHC-A01/2T

Bill of Materials, refer to Figure 4 above.

Note 2: IS31FL3743B use SPI interface and MISO, CS, SCK, MOSI position need to short by 0R resistors. In order to use the Arduino for external control, MISO, CS, SCK, MOSI positions are changed by 4.7kΩ resistors.

Note 3: The value of these resistors on the evaluation board is 20Ω. For PVCC=5V and red LED application, prefer 51Ω for these resistors as shown in datasheet Figure 1.



0

0 0

0

9

7

5

3

1

10

2

4

6

8

12

16

15

14

131197531

12108642

0

0

0

0

1

1

16

15

14

13 11 9 7 5 3 1

12 10 8 6 4 2

123456789101112131415161718

16

15

14

131197531

12108642

3

4

2

1

Figure 5: Board Component Placement Guide - Top Layer

Figure 6: Board PCB Layout - Top Layer



0

0 0

0

9

7

5

3

1

10

2

4

6

8

12

16

15

14

131197531

12108642

0

0

0

0

1

1

16

15

14

13 11 9 7 5 3 1

12 10 8 6 4 2

123456789101112131415161718

16

15

14

131197531

12108642

3

4

2

1

Figure 7: Board Component Placement Guide - Bottom Layer

Figure 8: Board PCB Layout - Bottom Layer





Copyright © 2018 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: a.) the risk of injury or damage has been minimized; b.) the user assume all such risks; and c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances



REVISION HISTORY

Revision Detail Information Date

A Initial release 2018.08.14



APPENDIX Ⅰ: IS31FL3743B Arduino Test Code V01A

#include<SPI.h> #include<avr/pgmspace.h> #define Addr_Write_Page0 0x50 #define Addr_Write_Page1 0x51 #define Addr_Write_Page2 0x52 const int slaveSelectPin = 10; byte PWM_Gamma64[64]= 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07, 0x08,0x09,0x0b,0x0d,0x0f,0x11,0x13,0x16, 0x1a,0x1c,0x1d,0x1f,0x22,0x25,0x28,0x2e, 0x34,0x38,0x3c,0x40,0x44,0x48,0x4b,0x4f, 0x55,0x5a,0x5f,0x64,0x69,0x6d,0x72,0x77, 0x7d,0x80,0x88,0x8d,0x94,0x9a,0xa0,0xa7, 0xac,0xb0,0xb9,0xbf,0xc6,0xcb,0xcf,0xd6, 0xe1,0xe9,0xed,0xf1,0xf6,0xfa,0xfe,0xff ; void setup() // put your setup code here, to run once: // set the slaveSelectPin as an output: pinMode (slaveSelectPin, OUTPUT); // initialize SPI: SPI.begin(); SPI.beginTransaction(SPISettings(20000000, MSBFIRST, SPI_MODE0)); //SPI.setClockDivider(SPI_CLOCK_DIV4); SPI.setDataMode(3); void loop() // put your main code here, to run repeatedly: mainloop(); void SPI_WriteByte(uint8_t Dev_Add,uint8_t Reg_Add,uint8_t Reg_Dat) //writing an LED register digitalWrite(slaveSelectPin, LOW); // take the SS pin low to select the chip: SPI.transfer(Dev_Add); // send in the address and value via SPI: SPI.transfer(Reg_Add); SPI.transfer(Reg_Dat); digitalWrite(slaveSelectPin, HIGH); // take the SS pin high to de-select the chip: uint8_t SPI_ReadByte(uint8_t address) digitalWrite(slaveSelectPin,LOW); SPI.transfer(0x05); SPI.transfer(address); uint8_t result = SPI.transfer(0x00); digitalWrite(slaveSelectPin, HIGH); return result; void Init3743B(void) int i,j; for(i=0;i<0xC7;i++) SPI_WriteByte(Addr_Write_Page0,i,0);//PWM for(i=1;i<0xC7;i++) SPI_WriteByte(Addr_Write_Page1,i,0xff);//scaling SPI_WriteByte(Addr_Write_Page2,0x02,0x70); SPI_WriteByte(Addr_Write_Page2,0x01,0xFF);//GCC SPI_WriteByte(Addr_Write_Page2,0x00,0x01);//



void mainloop(void)// int i,j; Init3743B(); // digitalWrite(0, LOW); // turn the ARDUINO BOARD LED on (HIGH is the voltage level) while(1) for(j=0;j<64;j++)//BLUE for(i=1;i<0xC7;i=i+3) SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500); for(j=63;j>=0;j--) for(i=1;i<0xC7;i=i+3) SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500); for(j=0;j<64;j++)//GREEN for(i=2;i<0xC7;i=i+3) SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500); for(j=63;j>=0;j--) for(i=2;i<0xC7;i=i+3) SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500); for(j=0;j<64;j++)//RED for(i=3;i<0xC7;i=i+3) SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500); for(j=63;j>=0;j--) for(i=3;i<0xC7;i=i+3) SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500); for(j=0;j<64;j++)//WHITE for(i=1;i<0xC7;i++) SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500); for(j=63;j>=0;j--) for(i=1;i<0xC7;i++)



SPI_WriteByte(Addr_Write_Page0,i,PWM_Gamma64[j]);//PWM delay(500);